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Capturing Groups From a Grep RegEx
...;2 # this could get noisy if there are a lot of non-matching files
fi
done
It's better to put the regex in a variable. Some patterns won't work if included literally.
This uses =~ which is Bash's regex match operator. The results of the match are saved to an array called $BASH_REMATCH. The f...
Mocking member variables of a class using Mockito
... works in places where nothing makes sense at all and the only target that one have is just to complete the stories you have assigned and go away. Yes, it is wrong, it makes no sense, un-qualified people takes the key decissions and all that things. So, at the end of the day, anti-patterns win for a...
How to format a duration in java? (e.g format H:MM:SS)
...
PeriodFormatter isn't included. That one of the differences between Java 8 Date Time API and Joda Time.
– Tim Büthe
Aug 4 '14 at 17:33
1
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Cluster analysis in R: determine the optimal number of clusters
...y = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))))
plot(d)
One. Look for a bend or elbow in the sum of squared error (SSE) scree plot. See http://www.statmethods.net/advstats/cluster.html & http://www.mattpeeples.net/kmeans.html for more. The location of the elbow in the resultin...
Find text string using jQuery?
...t. See the API information at: https://api.jquery.com/contains-selector/
One thing to note with the '*' wildcard is that you'll get all elements, including your html an body elements, which you probably don't want. That's why most of the examples at jQuery and other places use $('div:contains("I ...
What is the standard Python docstring format? [closed]
...her posts showed. However the default Sphinx docstring format was not mentioned and is based on reStructuredText (reST). You can get some information about the main formats in this blog post.
Note that the reST is recommended by the PEP 287
There follows the main used formats for docstrings.
- Ep...
Can unit testing be successfully added into an existing production project? If so, how and is it wor
...lity and defect rate - plus improved morale and profitability.
It can be done when you have both an accurate understanding and commitment from the parties involved.
First of all, it is important to understand that unit testing is a skill in itself. You can be a very productive programmer by "conve...
Is there an advantage to use a Synchronized Method instead of a Synchronized Block?
Can any one tell me the advantage of synchronized method over synchronized block with an example?
23 Answers
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What exactly do “u” and “r” string flags do, and what are raw string literals?
...d escape sequence (e.g. r"\").
"Raw" is not part of the type, it's merely one way to represent the value. For example, "\\n" and r"\n" are identical values, just like 32, 0x20, and 0b100000 are identical.
You can have unicode raw string literals:
>>> u = ur"\n"
>>> print type(u...
How do I use valgrind to find memory leaks?
...ory and forget to assign the pointer.
Don't overwrite a pointer with a new one unless the old memory is freed.
General advice for memory errors:
Access and write to addresses and indices you're sure belong to you. Memory
errors are different from leaks; they're often just IndexOutOfBoundsExcepti...